The AirTAC GFR300C08AC2WK AirTAC Filter Regulator 1/4 in PT is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR300C08AC2WK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body, with a 1/4 in PT port. This configuration carries the W-grade 5 um filter element for finer water and particulate removal than the standard 40 um element, an automatic drain that ejects collected condensate without manual attention, and a reverse/check valve that holds downstream pressure when the upstream supply is lost. The fitted round pressure gauge reads in psi, and the standard regulator adjusts outlet pressure across 0.15-0.9 MPa (20-130 psi). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread option (PT standard, G and NPT to order) and bracket. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08AC2WK AirTAC Filter Regulator 1/4 in PT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C0 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
Clean, regulated air for a machining centre's pneumatic tool clamps and chip-clearing nozzles, with the 5 um element protecting fine metering valves from particulate carryover.
A filtered and regulated air point feeding the pick-and-place cylinders and diverters on a carton packing conveyor, with the check valve holding cylinder position during a supply dip.
A dedicated treatment drop for a robotic screwdriving or pressing cell, where the automatic drain keeps condensate off the valves in an enclosure that is not checked daily.
Size 300 with a 1/4 in PT port suits lines where the required air flow falls in the mid range of the GFR family; step up to size 400 or 600, or down to size 200, according to the flow curve for your consumption. Choose the 5 um W-grade element when downstream equipment needs finer filtration than the 40 um standard. The automatic drain on this unit suits unattended or hard-to-reach installations; manual and differential-pressure drains are the alternatives on other codes. The fitted round gauge reads in psi, with square embedded gauges and MPa or bar scales available on other variants. PT is the standard thread; G (BSPP) and NPT are order options. A mounting bracket is included.
Because flow is published as curves and not as a single rated figure, ask us to confirm sizing against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves rather than a single rated figure, so no single number would be honest. Send us your line pressure and air consumption and we will confirm the flow figures from the datasheet for this exact model before you order.
The K in the code is a fitted reverse/check valve, which holds the regulated downstream pressure if the upstream supply is interrupted. The W is the filter grade: a 5 um element instead of the 40 um standard, for finer removal of water and particulate.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.